Henry harley pitt



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H. H. PITT. APPARATUS FOR MANUFACTURING PRESSED GLASS ARTICLES. No. 588,173. Patented Aug. 17,1897.

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' H. H. PITT.

APPARATUS FOR MANUFACTURING PRESSBD GLASS ARTICLES. No. 588,173. Patented Aug. 17,1897.

(No Model.) 3 Sheets-Sheet 3.

. H. H. PITT.

APPARATUS FOR MANUFACTURING PRESSED GLASS ARTICLES. No. 588,173. Patented Aug. 17,1897.- Jay-5.

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UNITED STATES PATENT OFFICE.

HENRY HARLEY PITT, OF LOW FELL, ENGLAND.

APPARATUSFOR MANUFACTURING PRESSED-GLASS ARTICLES.

SPECIFICATION forming part of Letters Patent No. 588,173, dated August 17, 1897.

Application filed February 3, 1896. Serial No. 577,899. (No model.) Patented in England March 8, 1892 No. 4,545; in Germany July 22, 1892, Nos. 71,671 and 75,507, and in Belgium November 27,1894,N0.112,868.

To all whom it may concern.-

Be it known that I, HENRY HARLEY PITT, a subject of the Queen of Great Britain, and a resident of Low Fell, in the county of Durham, England, have invented certain new and useful Improvements in Apparatus for the Manufacture of Pressed-Glass Articles, (for which I have obtained patents in Great Britain, No. 4,545, dated March 8, 1892; in Germany, Nos. 71,671 and 75,507, dated July 22, 1892, and in Belgium, No. 112,868, dated November 27, 1894,) of which the following is a full,'clear, and exact specification.

My present invention relates to that class of glass-pressin g machines or apparatus which is arranged with a reciprocating plunger operating within molds fixed to an intermittently-revolving horizontal table, such plunger and molds being operated by a powerdriven machine-shaft and connections; and the object of my invention is to so arrange plungers thatthey are brought into action intermittently in such a manner that while one such plunger is performing pressing work within its respective mold one or more plungers are out of action and cooling naturally or being cooled artificially, by which means glass articles may be more quickly made and pressed than has been possible with pressing-machines as hitherto arranged. Another improvement in my present invention consists in placing under the intermittently-revolving mold-table a horizontal pinion which has working through it a vertical spindle, the said spindle being lifted up at the required time by the pinion aforesaid engaging with a cog-wheel having a row of teeth at intervals in order to operate the pinion and so lift a mold when required in order to facilitate the removal therefrom of the pressed-glass arti- I intermittently revolvethe mold-table by means of a ratchet and pawl operated by a cam fixed to the machine-shaft; but I lay no claim to such mechanism as novel, neither do I claim the use of a motive-power engine which supplies through the medium of gearing the required motion to the machine-shat t, nor to the connecting-rods or the hollow screwspindle or spring-piston device for regulating the pressure of the plunger, so that it may adapt itself to the variations of glass in the mold. I therefore merelyshow and describe such parts in order that it may be Well understood as to what class of machine my present improvements are applicable, and I now begin to fully explain my improvements by reference to the accompanying drawings, in which Figure 1 is a side elevation of a glass-pressing machine with my improvements applied thereto. Fig. 2 isa similar elevation, but in section, taken on line b h of Fig. 5. Fig. 3 is a sectional plan taken on line a a of Fig. 2, and Fig. 4 is an enlarged view of a detail of that part of my invention which causes one plunger to revolve away horizontally for cooling while it brings another plunger into position ready for action. Fig. 5 is a front view of said machine. Fig' 6 is a sectional plan taken on line 0 c of Fig. 5, and Fig. 7 is an inverted plan of mold-table.

Similar letters of reference denote corresponding parts in each view.

Each plunger A is carried upon a horizontal plate B, and not, as hitherto,directly under the pressing-screw s. The said plate B is suspended to a rod R, which passes through bearings t and t and is supported, likewise, by a bracket F. The upper part of said rod R receives a sleeve 1', which is fixed thereto by a pin r Under the fixed sleeve 1" is arranged a spiral spring 0, which bears upward against said sleeve and downward upon a loose'sleeve U. The lower end of pressing-rod M is fixed to a shoe m, which bears on the plate B, so operating the plunger A and pressing it Within the mold D when required to form the glass article. To the center of the cross stay or guide E is pivoted a pin 6', (see enlarged sketch, Fig. 4,) the end of which bears in a semispiral groove r which is formed in duplicate in the sleeve r-that is to say, each groove r runs straightto a distance equal to more than the depth of the travel of the plunger within the mold, so as to allow the plunger to clear the mold before it moves laterally, and then each groove is formed in asemispirally manner until it reaches the opposite side of sleeve, and then it ascends perpendicularly and again semispirally, and it will be obvious that as there are two similar grooves the pin will work into each alternately, thereby first bringing one pl un gcr into action and then the other.

The machine is constructed with an iron frame F, carried upon wheels \V, and the frame F supports a motive-power engine N, which works a pinion p, and, by the intermediate gearing 19, p and p works the machineshaft V. (See Fig. 6.) The engine-shaft a has preferably a frictional coupling a with which to put the machine in and out of action.

The upper part of frame I carries a plate f, to which is secured two uprights or columns which act as vertical guides for the yoke f the latter being coupled to the machine-shaft V by the connecting-rods f and cranks f. The plate f supports the moldtable G by a vertical center shaft g, which has secured to it a ratchet-wheel g operated by a pawl 9 attached to a bar 9 the said bar receiving motion from a cam g fixed to the machine-shaft V.

The mold-table G carries the molds D, which are hinged thereto by hinges d, and in order to facilitate the removal of the pressedglass article from its respective mold I make with or fix to the under side of table Ga cogwheel 9", which is formed with teeth at intervals around its circumference, as shown at Fig. 7, and when said cogs engage with a pinion g which is carried upon the plate f, it moves a rod H upward through a hole in the mold-table immediately under a mold and so tilts the latter, as shown at Fig. 2.

The rod H is formed with a spiral groove 7t, into which bears the end of a pin 7L2, which is fixed to the wheel and the lower end of rod II is preferably made with a head and receives a spring 723. The wheel g fitting loosely upon the rod II it is obvious that when revolved the latter will rise or fall in accordance with the position of the pin 71,2 within the groove h.

The object of hingingthe pin to the frame of machine and keeping it up into position by a spring is so that the pin may be pressed backward clear of the slots in the sleeve when it is required to move round the plungerplate by hand when the machine is at rest. The hinged pin runs firstin one slot and then in another, being in one of the straight parts thereof during the pressing and withdrawing of the plunger.

Each mold subsequent to the pressing of the glass article therein and the withdrawal of the plunger may be tilted either to a position oblique, horizontal, or entirely over, as desired, it merely being necessary to have the spindle II of a desired length. \Yhere the mold is moved entirely over, the pressed-glass article falls from the mold upon an asbestos sheet.

The upper part of the rod M is fixed to a piston m, arranged with spiral springs m so as to operate in a well-known manner.

I have now fully described my invention in combination with the parts of the machine which have been in use previously to my improvement, and I would here point out that I do not desire to claim as novel the use of a motive-power engine N or the drivinggear, neither the combination of a revolving table G with ordinary molds D or the means of pressing downward the plunger A; but,

Having now described my invention and the way in which the same is to be carried into effect, what I desire to secure by Letters Patent is as follows:

1. A horizontal table capable of being intermittently revolved carrying molds in combination with a horizontal plunger-plate arranged above the same capable of being intermittently revolved and earryin g plungers substantially as described.

2. In a glass-press, the combination of a mold, a horizontal rotatory reciprocating plunger-plate, having a series of plungers, a

spindle for carrying the plungerplate, a'

sleeve fixed thereto, said sleeve having two grooves or slots which are partly spiral and partly vertical in form, a pin hinged to the machine with one end engaged in one of the slots, a spring to maintain the pin in a horizontal position, substantially as described, the slots and pin cooperating to rotate the intermittently-reeiproeating plunger-plate to bring a fresh plunger in position for pressing at each stroke of the plunger, the vertical slots allowing the plunger to be worked vertically in and out of the mold and the spiral slots with hinged pin rotating the plungerplate intermittently.

3. In a glass-press, the combination of a mold-table, having molds hinged thereto, a horizontal rotatory reciprocating plungerplate having a series of plungers, a pressingrod, with piston or springs, said rod operating immediately over the operating-plunger, and mold receiving same, substantially as described.

4. In a glass-press, the combination of an intermittently-revoluble mold-table, having molds hinged thereto, a wheel fixed to under side of said table, said wheel having a series of cogs arranged at intervals on its eircumference, a pinion meshing with said wheel, a spindle passing through said pinion and having a spirally-formed groove, a pin fitted in boss of said pinion and having its end bearing in said groove, substantially as described, the groove and pin cooperating to raise up the spindle so as to cause it to pass through a hole in the table and tilt or turn over a mold at each stroke of machine in order to remove or to facilitate the removal of the pressedglass article.

In testimony that I claim the foregoing I have hereunto set my hand this Qlth day of December, 1805.

HENRY HARLEY PIT.

Witnesses:

ADAM Dorms, THos. MOTHERSDALL.

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